Hello, my name is ben schwarzschild. I have a AT&T iphone 4 32 Gb (black) serial number: MC610LL. Version 4.3.5 (8L1). Carrier AT&T 10.0. I am going to sell it and i was wondering if either jailbreaking and unlocking, or just one without the other would increase he value of my product and by how much?

My second concern is just how to jailbreak or unlock it, i am not really sure at all, i tried a video tutorial but quickly got lost.

You should sell it as is.
Then the buyer can decide if they want to use a Gevey turbo sim to unlock it.
Whatever you do dont put it on official 5.0 cause that only unlock option will be gone.
Also dont try to JB on 4.3.5 cause it will be a tethered JB and the buyer if not informed well might get stuck in recovery mode.

Hello, my name is ben schwarzschild. I have a AT&T iphone 4 32 Gb (black) serial number: MC610LL. Version 4.3.5 (8L1). Carrier AT&T 10.0. I am going to sell it and i was wondering if either jailbreaking and unlocking, or just one without the other would increase he value of my product and by how much?

My second concern is just how to jailbreak or unlock it, i am not really sure at all, i tried a video tutorial but quickly got lost.